.index{
    width: 500px;
    height: 500px;
    background:blanchedalmond;
    border: black solid 1px;
    border-radius: 10px;
    margin: 100px auto;
}
.index img{
    
    width: 150px;
    height: 50px;
    background: black;
    position: relative;
    left: 175px;
    top: 75px;
    border-radius: 5px;
}
#username{
    margin-left:90px;
    margin-top: 130px;
    padding: 7px;
}
#password{
    margin-left:90px;
    margin-top: 20px;
    padding: 7px;
}
.layui-form-item{
   padding-top: 30px;
}
.layui-btn{
    margin-top: 70px;
    margin-left: 205px;
}
input{
    width: 300px;
}
.btn{
    position: absolute;
    top:100px;
    left: 988px;
}